Washing Machine Drive System

ABSTRACT

The present invention discloses a top-loading washer drive system. The system includes a mounting plate connecting to the body of the washer, a driving pulley, a main shaft assembly fastened to the washer agitator, a sleeve shaft assembly fastened to the washer basket, a clutch, and a brake module. The lower part of main shaft assembly is connecting to the driving pulley. The sleeve shaft assembly and main shaft assembly are coaxially arranged and can rotate with respect to each other. The lower end of the sleeve shaft assembly is connected with driving pulley through the clutch. The main shaft assembly includes an input shaft at one end and an output shaft at the other end. A planetary gear module and an oscillating drive output module are configured between the input shaft and the output shaft. The braking module includes a cone-shaped brake unit and a braking control unit.

FIELD OF THE INVENTION

The present invention generally relates to drive mechanisms for washingmachine and, more particularly, to top-loading washer drive systems.

BACKGROUND

Similar to other types of washers, a top-loading washer usually has awashing cycle and a spin cycle. During the washing cycle, the agitatorrotates back and forth to achieve washing operation; while during thespin cycle, both the agitator and the basket rotate at a high speed tospin water out of the washing items. By rotating back and forth, theagitator can effect better washing operation and prevent the washingitems inside the basket from tangling altogether. The agitator's backand forth rotation operation is realized by changing the rotatingdirections of a drive motor controlled by a controller. However, suchoperation may require frequent starting and back-and-forth rotating ofthe drive motor, which generally leads to a much shorter serving lifefor the drive motor.

In addition, due to operational requirements of the top-loading washer,its drive mechanism must enable the agitator to rotate at a reducedspeed during the washing cycle while the basket remains stationary; torotate at a high speed together with the basket during the spin cycle;and to stop timely when needed. Thus, the structure of the drivemechanism can be complex and often need coordination between clutch andbrake modules. In conventional washer drive systems, the clutch oftenincludes a ratchet wheel, a pawl and a clutch lever, and the brakingmodule is usually provided separately. This may result in a bulky andcomplex structure that may be inconvenient for installation andmaintenance. Further, because the brake module is provided separately,it may be easy to cause coordinating issues between braking and drivingoperations. Sometimes the braking operation and the driving operationare performed at the same time or the braking operation is performedafter the driving operation stops for a while, which may be undesiredduring operation.

CONTENTS OF THE INVENTION

The present invention provides a top-loading washer drive system withsimple structures and reliable performances.

The technical solution of the present invention provides a top-loadingwasher drive system which includes a mounting plate connecting to thebody of the washer, a driving pulley, a main shaft assembly fastened tothe washer agitator, a sleeve shaft assembly fastened to the washerbasket, a clutch, and a brake module. The lower part of main shaftassembly is connecting to the driving pulley. The sleeve shaft assemblyand main shaft assembly are coaxially arranged and can rotate withrespect to each other. The lower end of the sleeve shaft assembly isconnected with the driving pulley through the clutch. The main shaftassembly includes an input shaft at one end and an output shaft at theother end. A planetary gear module and an oscillating drive outputmodule are configured between the input shaft and the output shaft. Thebraking module includes a cone-shaped brake unit and a braking controlunit.

In the described top-loading washer drive system, the cone-shaped brakeunit includes a cone flange fastened to the mounting plate, a brake padlining at the inner wall of the cone flange, and a cone-shaped brakedisk matching the shape of inner wall of the cone flange. The brake diskis fitted to slide along the sleeve shaft and at least two brake springsare coupled to the lower part of the brake disk. The lower ends of thebrake springs are coupled to a brake spring holding assembly. The brakedisk engages the brake pad under the effect of the brake springs. Thebrake spring holder assembly is rotated along the sleeve shaft.

In the described top-loading washer drive system, the brake springholder assembly includes a brake spring holder cover and a brake springholder. The brake spring holder cover and the brake spring holder arecoaxially arranged and rotate with respect to each other. The brakespring holder cover is fastened to the lower ends of the brakingsprings. The brake spring holder is provided with two clutch slots andtwo nut slots. The two clutch slots are positioned in opposite and thetwo nut slots are also positioned in opposite. The clutch slots and thenut slots are arranged alternately with each other.

In the described top-loading washer drive system, the clutch slots arerectangular slots. The nut slots are fan-shaped slots and may have acorresponding arch angle α between approximately 90 to 150 degrees.

In the described top-loading washer drive system, the brake springholder cover is in a ring shape and the inner radius of brake springholder cover matches the largest opening in brake spring holder. Theouter edge of the brake spring holder cover extends downwards and iscoaxially placed with respect to the outer cylindrical surface of brakespring holder.

In the described top-loading washer drive system, the brake springholder cover and the brake spring holder are coaxially arranged androtate with respect to each other, which is realized by placing aplurality of steel balls between the brake spring holder cover and thebrake spring holder.

In the described top-loading washer drive system, a steel ball holder isplaced between the brake spring holder cover and the brake springholder. The steel ball holder is in a ring shape and a plurality ofholes is evenly spaced out around the ring shape. Each through-holeholds a corresponding steel ball.

In the described top-loading washer drive system, the braking controlunit a ball-screw set including a nut sleeve, a screw sleeve and aplurality of bearing balls. The nut sleeve is fastened to the brakingdisk and is positioned above the brake spring holder. It is fitted toslide along the sleeve shaft. The nut sleeve includes two insertingteeth positioned in opposite at the lower end of the nut sleeve. Whenthe nut sleeve slides down, the two inserting teeth fit into the two nutslots of the brake spring holder, and may rotate a certain distance inthe nut slots. The screw sleeve is in a cylindrical ring shape androtationally mounted around and coaxially arranged with a sleeve shaftassembly. The lower end of the screw sleeve is coupled to the clutch.The plurality of bearing balls are provided between the screw sleeve andthe nut sleeve.

In the described top-loading washer drive system, a bearing ball holderis placed between the nut sleeve and the screw sleeve. The bearing ballholder has a plurality of position-restriction holes to accommodaterespective bearing balls.

In the described top-loading washer drive system, the bearing ballholder has a total of 3 to 12 position-restriction holes helicallydistributed within a circle of the thread.

In the described top-loading washer drive system, the nut sleeve isfastened to the braking disk through a ring gear of nut sleeve. Thesleeve shaft assembly has outer gears matching the ring gear of nutsleeve.

In the described top-loading washer drive system, the described clutchis a clutch with helical spring wound with square-cross-section wire. Itincludes a coupler, a clutch sleeve, and a clutch square-wire spring.The coupler and the clutch sleeve are concentric and have a same outerdiameter that matches with the inner diameter of the square-wire spring.The coupler and the clutch sleeve are also coaxially and parallelarranged with respect to each other. The clutch sleeve may have clutchinserting teeth at the upper end of the clutch sleeve. The clutchinserting teeth may be inserted into the corresponding clutch slot ofthe brake spring holder. The coupler is fastened to the pulley.

In the described top-loading washer drive system, 4-8 brake springs areevenly distributed at the lower end of the brake disk.

In the described top-loading washer drive system, ten through-holes areevenly distributed around the ring of the steel ball holder and eachthrough-hole holds a corresponding steel ball.

In the described top-loading washer drive system, the bearing ballholder has a total of 4 position-restriction holes, helicallydistributed within a circle of the thread.

In the described top-loading washer drive system, the planetary gearmodule includes a gear box cover, a gear box casing, a planetary ringgear mounted on the gear box casing. A planet gear holder positionedinside the planetary ring gear, and at least two planet gears areconfigured inside the planet gear holder. The planet gears arerotationally coupled to the oscillating drive output module. The lowerend of the input shaft is securely fastened to the pulley, and the upperend of the input shaft is coupled to the planet gear holder via aspline. The sleeve shaft assembly includes an input sleeve shaft and anoutput sleeve shaft. The upper end of the input sleeve shaft is fastenedto the gear box casing; and the lower end of the output sleeve shaft isfastened to the gear box cover.

In the described top-loading washer drive system, the oscillating driveoutput module includes an eccentric shaft, an eccentric shaft limitring, a slider, a rack gear, and an output pinion gear. The rack gear isgenerally a frame of a rectangular shape, a plurality of rack teeth isprovided at an inner side of the frame of the rack gear, and aleft-right oriented sliding track is located at the lower part of theframe. The rack gear can move back and forth with the gear box andlocated on top of the planet gears. The slider is in a rectangularshape, with a through hole at the middle, and the slider can slide leftand right along the sliding tracks under the rack gear. The eccentricshaft is configured to have a plurality of connection holescorresponding to the multiple planet gears and a shaft matched with thethrough hole of the slider, and the connection holes are rotationallycoupled with the planet gears, and the shaft is rotationally coupledwith the through hole of the slider. The eccentric shaft limit ringlimits the position of the eccentric shaft. The output gear is a sectorpinion gear meshing with the rack gear. The top end of output gear isalso coupled to output shaft via the spline.

In the described top-loading washer drive system, the input sleeve shaftis concentrically arranged with the input shaft and is rotationallymounted around the input shaft. The output sleeve shaft is alsoconcentrically arranged with the output shaft and is rotationallymounted around the output shaft. Ball bearings are provided on the upperend and the lower end of the input shaft, and on the upper end and thelower end of the output shaft. The ball bearings are oil bearings.

In the described top-loading washer drive system, seals are provided atthe lower end of the input shaft and the upper end of the output shaft.

The present invention includes the features such as the square-wirespring clutch, the cone-shaped brake, the planetary gear with a rackgear, and the sector shaped output gear outputting positive and negativetorque, which has simple structures, reliable driving powertransmission, precise braking, less space required, easy installationand maintenance, and a longer service life, exhibiting a higher level ofnovelty and creativity.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly depict the technical solutions in theembodiments of the present invention, the details about the presentinvention based the embodiments are elaborated below by reference toaccompanying drawings, wherein:

FIG. 1 illustrates a structural cross-section view according to thepresent invention;

FIG. 2 illustrates an exploded view according to the present invention;

FIG. 3 illustrates an elevation view of an exemplary clutch and brakemodule according to the present invention;

FIG. 4 illustrates an exploded view of a brake spring holder assemblyaccording to the present invention;

FIG. 5 illustrates an exemplary brake spring holder according to thepresent invention;

FIG. 6 illustrates an exemplary braking control unit according to thepresent invention;

FIG. 7 illustrates certain surface of an exemplary sleeve shaftaccording to the present invention;

FIG. 8 illustrates an exploded view of an exemplary clutch according tothe present invention;

FIG. 9 illustrates an exemplary planetary gear module and oscillatingdrive output module according to the present invention;

FIG. 10 illustrates certain parts of the planetary gear module accordingto the present invention;

FIG. 11 illustrates an exploded view of the exemplary oscillating driveoutput module according to the present invention.

DETAILED EMBODIMENTS

As shown in FIG. 1-3, the present invention includes a mounting plate100 connecting to the body of the washer, a driving pulley 200, a mainshaft assembly 300, a sleeve shaft assembly 400, a clutch 500, and abrake module 600. The lower part of main shaft assembly 300 isconnecting to the driving pulley 200. The sleeve shaft assembly 400 andmain shaft assembly 300 are coaxially arranged and can rotate withrespect to each other. The lower end of the sleeve shaft assembly 400 isconnected with driving pulley 200 through the clutch 500.

The main shaft assembly 300 includes an input shaft 301 and an outputshaft 302. A planetary gear module 330 and an oscillating drive outputmodule 340 are configured between the input shaft 301 and the outputshaft 302. The braking module 600 includes a cone-shaped brake unit 610and a braking control unit 620.

The brake unit 610 includes a cone flange 611 fastened to the mountingplate 100, a brake pad 612 lining at the inner wall of the cone flange611, and a cone-shaped brake disk 613 matching the shape of inner wallof the cone flange 611. The brake disk 613 is fitted to slide along thesleeve shaft 400 and eight brake springs 614 are coupled to the lowerend of the brake disk 613. The lower ends of the brake springs 614 arecoupled to a brake spring holding assembly 615. The brake disk 613engages the brake pad 612 under the effect of the brake springs 614, andthe brake spring holder assembly 615 is rotationally configured alongthe sleeve shaft 400.

As shown in FIG. 4-5, the brake spring holder assembly (615) includes abrake spring holder cover 615 a and a brake spring holder 615 b. Thebrake spring holder cover 615 a and the brake spring holder 615 b arecoaxially arranged and can rotate with respect to each other. The brakespring holder cover 615 a is fastened to the lower ends of the brakingsprings 614.

The brake spring holder cover 615 a is in a ring shape and the innerradius of brake spring holder cover 615 a matches the largest opening(e.g., the slot) in brake spring holder 615 b. The outer edge 615 a-1 ofthe brake spring holder cover 615 a extends downwards and isconcentrically placed with respect to the outer cylindrical surface ofbrake spring holder 615 b. A plurality of steel balls 615 c are placedbetween the brake spring holder cover 615 a and the brake spring holder615 b and are held together by steel ball holder 615 d. The steel ballholder 615 d is in a ring shape, with a plurality of through holes 615d-1 evenly spaced out around the ring shape. Each through-hole 615 d-1holds a corresponding steel ball 615 c.

The brake spring holder 615 b is provided with two clutch slots 615 b-1and two nut slots 615 b-2. The two clutch slots 615 b-1 are positionedin opposite; the two nut slots 615 b-2 are also positioned in opposite;and the clutch slots 615 b-1 and the nut slots 615 b-2 are arrangedalternately with each other. The clutch slots 615 b-1 are rectangularslots, and the nut slots 615 b-2 are fan-shaped or sector-shaped slotsand have a corresponding arch angle α between approximately 90 to 150degrees.

As shown in FIGS. 3, 6 and 7, the braking control unit 620 includes anut sleeve 621, a screw sleeve 622, and a plurality of bearing ball 623.The nut sleeve 621 is fastened to the braking disk 613 and is positionedabove the brake spring holder 615 b. It is fitted to slide along thesleeve shaft 400. The nut sleeve 621 also includes inserting teeth 621-1positioned at the lower end of the nut sleeve 621. When the nut sleeve621 slides down, the inserting teeth 621-1 can fit into thecorresponding nut slots 615 b-2 of the brake spring holder 615 b and canrotate a certain distance in the nut slots 615 b-2.

The screw sleeve 622 is in a cylindrical ring shape and rotationallymounted around and coaxially arranged with a sleeve shaft assembly 400.The lower end of the screw sleeve 622 is coupled to the clutch 500. Aplurality of bearing balls 623 are provided between the screw sleeve 622and the nut sleeve 621. The bearing ball holder 624 is placed betweenthe nut sleeve 621 and the screw sleeve 622. The bearing ball holder 624has a plurality of position-restriction holes to accommodate respectivebearing balls 623. The bearing ball holder 624 has a total of 3 to 12holes helically distributed within a circle of the thread. FIG. 6 showseight position-restriction holes evenly distributed, preferably fourholes may be used. The nut sleeve 621 is fastened to the braking disk(613) through a ring gear of nut sleeve 616. The ring gear of nut sleeve616 on the surface of sleeve shaft assembly 400 is configured to haveouter gears 403 matching the ring gear of nut sleeve 616.

As shown in FIGS. 1, 3 and 8, the clutch 500 is a clutch with helicalspring wound with square-cross-section wire, and it includes a coupler501, a clutch sleeve 502, and a clutch square-wire spring 503. Thecoupler 501 and the clutch sleeve 502 are concentric and have a sameouter diameter that matches with the inner diameter of the clutch spring503. The coupler 501 and the clutch sleeve 502 are also coaxially andparallel arranged with respect to each other. The clutch sleeve 502 isconfigured above the coupler 501 and below the brake spring holder 615 band coupled to the screw sleeve 622. The clutch sleeve 502 has clutchinserting teeth 502-1 at the upper end of the clutch sleeve 502. Theclutch inserting teeth 502-1 may be inserted into the correspondingclutch slots 615 b-1 of the brake spring holder 615 b to fix position.The coupler 501 is fastened to the pulley 200.

As shown in FIGS. 9 and 10, the planetary gear module 330 includes agear box cover 331, a gear box casing 332, a planetary ring gear 333mounted on the gear box casing 332, a planet gear holder 334 positionedinside the planetary ring gear 333, and at least two planet gears 335inside the planet gear holder 334. The planet gears 335 are rotationallycoupled to the oscillating drive output module 340. The lower end of theinput shaft 301 is securely fastened to the pulley 200, and the upperend of the input shaft 301 is coupled to the planet gear holder 334 by aspline.

The sleeve shaft assembly 400 includes an input sleeve shaft 401 and anoutput sleeve shaft 402. The upper end of the input sleeve shaft 401 isfastened to the gear box casing 332, and the lower end of the outputsleeve shaft 402 is fastened to the gear box cover 331. The input sleeveshaft 401 is concentrically arranged with the input shaft 301 and isrotationally mounted around the input shaft 301. The output sleeve shaft402 is also concentrically arranged with the output shaft 302 and isrotationally mounted around the output shaft 302. The ball bearings 701are provided on the upper end and the lower end of the input shaft 301,and on the upper end and the lower end of the output shaft 302; the ballbearings 701 are all oil bearing. Seals 702 are provided at the lowerend of the input shaft 301 and the upper end of the output shaft 302.

As shown in FIGS. 9 and 11, the oscillating drive output module 340includes an eccentric shaft 341, an eccentric shaft limit ring 342, aslider 343, a rack gear 344, and an output pinion gear 345. Wherein, therack gear 344 is generally a frame of a rectangular shape, and aplurality of rack teeth 344-1 is provided at an inner side of the frameof the rack gear 344.

The slider 343 is in a rectangular shape, with a through-hole 343-1 atthe middle, and the slider 343 can slide left and right along thesliding tracks 344-2 under the rack gear 344. The eccentric shaft 341 isconfigured to have a plurality of connection holes 341-1 correspondingto the multiple planet gears 335 and a shaft 341-2 matched withconnection holes 341-1 on top of the eccentric shaft 341. The connectionholes 341-1 are coupled with respective gear shafts of the planet gears335, and shaft 341-2 is coupled with the through hole 343-1 of theslider 343. The eccentric shaft limit ring 342 limits the position ofthe eccentric shaft 341. The output gear 345 is a sector pinion gearmeshing with the rack gear 344 and the top end of output gear 345 isalso coupled to output shaft 302 via a spline.

When the washer drive motor rotates in the clock-wise direction, therotation unwinds the clutch square-wire spring 503 and the drivingpulley 200 only drives the input shaft 301 to rotate in the sameclock-wise rotation. The input shaft 301 then transmits the drivingforce to the planetary gear module 330 and the oscillating drive outputmodule 340, which causes the agitator rotating back and forth tocomplete the washing cycle. Because the sleeve shaft assembly 400 is notrotating under the control of the brake module 600, the basket of washer10 remains still.

When the washer driving motor rotates in the reversed direction (acounter-clock-wise direction), the clutch spring 503 of the clutch 500may wrap tightly and cause the brake control unit 620 to move downwardso that the brake disk 613 is pulled down and disengages with the brakepad 612. During the process of pulling down the brake disk 613, theinserting teeth 621-1 of the screw sleeve 621 are inserted into thecorresponding nut slots 615 b-2 at the brake spring holder 615 b, androtate for a certain distance to avoid the shear stress of the brakesprings 614 and to ensure that the brake disk 613 disengages with thebrake pad 612.

Afterwards, the driving pulley 200 drives both the input shaft 301 andthe input sleeve shaft 401 to rotate at the same speed. The input sleeveshaft 401 drives the gear box casing 332 and the gear box cover 331 ofthe planetary gear module 330, and then drives the output shaft 302 andthe output sleeve shaft 402 to rotate at the same high speed to completethe spin cycle. After the spin cycle is completed, the driving power forthe driving pulley 200 stops, the clutch spring 503 is no longer in thewrap-around state. Under the effect of the brake springs 614, the brakecontrol unit 620 automatically resumes its original positions, the brakedisk 613 moves upward and resumes the braking position. Thus, the sleeveshaft 400 and the basket will come to a rapid stop.

In the above-mentioned embodiments, the purposes, technical solutionsand beneficial effects of the present invention are further described.It should be understood that the above described embodiments are onlyspecific embodiments of the present invention and do not limit the scopeof the present invention. Any modifications, equivalent replacements,and improvements thereof without departing from the sprits andprinciples of the present invention should fall under the scope of thepresent invention.

What is claimed is:
 1. A top-loading washer drive system for a washer,comprising: a mounting plate connecting to a body of the washer; adriving pulley; a main shaft assembly fastened to an agitator of; thewasher; a sleeve shaft assembly fastened to a drum of the washer drum; aclutch; and a brake module, wherein: a lower part of the main shaftassembly is connected with the driving pulley; the sleeve shaft assemblyand main shaft assembly are coaxially arranged and rotatable withrespect to each other; a lower end of the sleeve shaft assembly isconnected with driving pulley through the clutch; the main shaftassembly includes an input shaft at one end and an output shaft at theother end; a planetary gear module and an oscillating drive outputmodule are configured between the input shaft and the output shaft; andthe braking module includes a cone-shaped brake unit and a brakingcontrol unit.
 2. The top-loading washer drive system according to claim1, wherein: the brake unit includes a cone flange fastened to themounting plate, a brake pad lining at an inner wall of the cone flange,and a cone-shaped brake disk matching a shape of the inner wall of thecone flange; the brake disk is fitted to slide along the sleeve shaftand at least two brake springs are coupled to a lower part of the brakedisk; lower ends of the brake springs are coupled to a brake springholding assembly; the brake disk engages the brake pad under effect ofthe brake springs; and the brake spring holder assembly is rotatablealong the sleeve shaft.
 3. The top-loading washer drive system accordingto claim 2, wherein: the brake spring holder assembly includes a brakespring holder cover, and a brake spring holder; the brake spring holdercover and the brake spring holder are coaxially arranged and rotatablewith respect to each other; the brake spring holder cover is fastened tolower ends of the braking springs; the brake spring holder is providedwith two clutch slots and two nut slots; the two clutch slots arepositioned symmetrically; the two nut slots are positionedsymmetrically; and the clutch slots and the nut slots are arrangedalternately with each other.
 4. The top-loading washer drive systemaccording to claim 3, wherein: the clutch slots are rectangular slots;the nut slots are fan-shaped slots and have a corresponding arch angle αbetween approximately 90 to 150 degrees.
 5. The top-loading washer drivesystem according to claim 4, wherein: the brake spring holder cover isin a ring shape; an inner radius of brake spring holder cover matchesthe largest opening in the brake spring holder; and an outer edge of thebrake spring holder cover extends downwards and is coaxially placed withrespect to outer cylindrical surface of the brake spring holder.
 6. Thetop-loading washer drive system according to claim 4, wherein: the brakespring holder cover and the brake spring holder are coaxially arrangedand rotatable with respect to each other, by placing a plurality ofsteel balls between the brake spring holder cover and the brake springholder.
 7. The top-loading washer drive system according to claim 6,wherein: a steel ball holder is placed between the brake spring holdercover and the brake spring holder; the steel ball holder is in a ringshape and a plurality of holes is evenly distributed around the ringshape; and each hole holds a corresponding steel ball.
 8. Thetop-loading washer drive system according to claim 3, wherein: thebraking control unit is a bearing-ball-screw set including a nut sleeve,a screw, a plurality of bearing balls; the nut sleeve is fastened to thebraking disk and is positioned above the brake spring holder and isfitted to slide up and down along the sleeve shaft; inserting teeth arepositioned at a lower end of the nut sleeve; when the nut sleeve slidesdown, the inserting teeth fit into corresponding nut slots of the brakespring holder, and rotate a certain distance in the nut slots; the screwsleeve is in a cylindrical ring shape and rotationally mounted aroundand coaxially arranged with the sleeve shaft assembly; a lower end ofthe screw sleeve is coupled to the clutch; and the plurality of bearingballs are provided between the screw sleeve and the nut sleeve.
 9. Thetop-loading washer drive system according to claim 8, wherein: a bearingball holder is placed between the nut sleeve and the screw sleeve; thebearing ball holder has a plurality of position-restriction holes toaccommodate respective bearing balls.
 10. The top-loading washer drivesystem according to claim 9, wherein: the bearing ball holder has atotal of 3 to 12 position-restriction holes helically distributed withina circle of thread.
 11. The top-loading washer drive system according toclaim 8, wherein: the nut sleeve is fastened to the braking disk througha ring gear of the nut sleeve; and the sleeve shaft assembly isconfigured to have an outer gear matching the ring gear of the nutsleeve.
 12. The top-loading washer drive system according to claim 3,wherein: the clutch is a clutch with a helical spring wound withsquare-cross-section wire, including a coupler, a clutch sleeve, and aclutch spring; the coupler and the clutch sleeve are concentric and havea same outer diameter that matches with an inner diameter of the clutchspring; the coupler and the clutch sleeve are coaxially and parallelarranged with respect to each other; the clutch sleeve is placed abovethe coupler and below the brake spring holder and is concentricallycoupled with the screw; the clutch sleeve has clutch inserting teeth atan upper end of the clutch sleeve; the clutch inserting teeth areinserted into the corresponding clutch slots of the brake spring holder;and the coupler is fastened to the driving pulley.
 13. The top-loadingwasher drive system according to claim 2, wherein: a total number of 4to 8 brake springs are evenly distributed at a lower end of the brakedisk.
 14. The top-loading washer drive system according to claim 7,wherein: a total number of ten holes evenly distributed around a steelball holder and each hole holds a corresponding steel ball.
 15. Thetop-loading washer drive system according to claim 10, wherein: thebearing ball holder has a total of 4 position-restriction holeshelically distributed within a circle of thread.
 16. The top-loadingwasher drive system according to claim 1, wherein: the planetary gearmodule includes a gear box cover, a gear box casing, a planetary ringgear mounted on the gear box casing, a planet gear holder positionedinside the planetary ring gear, and at least two planet gears inside theplanet gear holder; the planet gears are rotationally coupled to theoscillating drive output module; a lower end of the input shaft issecurely fastened to the driving pulley, and an upper end of the inputshaft is coupled to the planet gear holder by a spline; the sleeve shaftassembly includes an input sleeve shaft and an output sleeve shaft; andthe upper end of the input sleeve shaft is fastened to the gear boxcasing; and a lower end of the output sleeve shaft is fastened to thegear box cover.
 17. The top-loading washer drive system according toclaim 16, wherein: the oscillating drive output module includes aneccentric shaft, an eccentric shaft limit ring, a slider, a rack gear,and an output pinion gear, wherein: the rack gear is a frame of arectangular shape, and a plurality of rack teeth are provided at aninner side of the frame of the rack gear; a left-right oriented slidingtrack is located at a lower part of the frame; the rack gear can moveback and forth with the gear box and located on top of the planet gears;the slider is in a rectangular shape, with a through hole at the middle,and the slider can slide left and right along the sliding tracks underthe rack gear; the eccentric shaft is configured to have a plurality ofthrough connection holes corresponding to the multiple planet gears anda shaft matched with connection holes on top of the eccentric shaft; theconnection holes are coupled with respective gear shafts of the planetgears, and shaft is coupled with the through hole 341-1 of the slider;the eccentric shaft limit ring limits the position of the eccentricshaft; the output gear is a sector pinion gear meshing with the rackgear and a top end of output gear is coupled to the output shaft via aspline.
 18. The top-loading washer drive system according to claim 16,wherein: the input sleeve shaft is concentrically arranged with theinput shaft and is rotationally mounted around the input shaft; theoutput sleeve shaft is concentrically arranged with the output shaft andis rotationally mounted around the output shaft; the ball bearings areprovided on an upper end and an lower end of the input shaft, and on anupper end and an lower end of the output shaft; and the ball bearingsare oil bearings.
 19. The top-loading washer drive system according toclaim 16, wherein, seals are provided at a lower end of the input shaftand an upper end of the output shaft.